# 1,4-Dioxane

URL: https://app.greenveil.ai/ingredients/ingredient_cas_123_91_1
Categories: beauty, cleaning, industrial
Functions: Fragrance, No specific technical function, Surfactant (surface active agent), Trace byproduct
Identifier: 123-91-1

> 1,4-Dioxane is used as fragrance / no specific technical function. Greenveil chemical-concern score: 100/100 — Critical concern driven by cmr.. Assessed from 6 sources.

## Safety assessment

- Chemical concern score: 100/100 — Critical concern driven by cmr.
- Confidence: 4
- Rationale: Dioxane is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

## Regulatory status

- EU: banned — Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products. CMR: Carcinogenic Cat. 2()
- US: commercial use observed — EPA CPDat observed this chemical in 460 composition records across product categories including Industrial products, Specialty occupational products, Raw materials. EPA CPDat classifies this chemical for functional uses including No specific technical function, Surfactant (surface active agent), Trace byproduct.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._